SN4 ""

No	Pattern	Freq
1	[art] [noun] must be at	17
2	[art] [noun] must be at	17
3	[adj] [noun] must be at	17
4	the [noun] must be at	14
5	the [noun] must be at	14
6	[adj] [noun] must be at	11
7	[noun] [noun] must be at	10
8	[noun sg] [noun] must be at	7
9	[det] [noun] must be at	6
10	[noun] [pron] must be at	10
11	[noun] [noun] must be at	10
12	[noun] [noun sg] must be at	7
13	[noun] there must be at	5
14	[noun] [pers pn] must be at	5
15	[noun] there must be at	5
16	[noun] [ex0] must be at	5
17	[noun] must [adv] be at	6
18	[noun] must [adv] be at	6
19	[noun] must be [verb] at	140
20	[noun] must be [vb pp] at	134
21	[noun] must be [adj] at	17
22	[noun] must be [adj] at	15
23	[noun] must be look at	11
24	[noun] must be looked at	10
25	[noun] must be make at	9
26	[noun] must be made at	9
27	[noun] must be [v-ing] at	6
28	[noun] must be point at	5
29	[noun] must be set at	5
30	[noun] must be give at	5